Diagnostics Hub Standard Collector Service Elevation of Privilege Vulnerability

published 2021-04-13 5y ago modified 2026-06-17 4mo ago also EUVD-2021-14998

cvss: 7.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 64%
public exploits: 0; none known

Patch / fix

links 1

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28313 advisory

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Exploit prediction

1.04% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
CNA	3.1	7.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	4.6	AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

Microsoft Windows 10 Version 1803
Microsoft Windows 10 Version 1809
Microsoft Windows Server 2019
Microsoft Windows Server 2019 (Server Core installation)
Microsoft Windows 10 Version 1909
Microsoft Windows Server, version 1909 (Server Core installation)
Microsoft Windows 10 Version 2004
Microsoft Windows Server version 2004
Microsoft Windows 10 Version 20H2
Microsoft Windows Server version 20H2
Microsoft Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)
Microsoft Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)
Microsoft Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)
Microsoft Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)
Microsoft Microsoft Visual Studio 2015 Update 3

Classification

Weakness

CWE-269 Improper Privilege Management

References

portal.msrc.microsoft.com /en-US/security-guidance/advisory/CVE-2021-28313
patch, vendor-advisory
seclists.org /fulldisclosure/2021/Apr/40
mailing-list, third-party-advisory
packetstormsecurity.com /files/162251/Microsoft-DiagHub-Privilege-Escalation.html
third-party-advisory, vdb-entry

Sources

CVE List CVE-2021-28313
NVD CVE-2021-28313

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.